libvhost-user/include/compiler.h

4  * See the COPYING file in the top-level directory.
45         const typeof(((type *) 0)->member) *__mptr = (ptr);     \
46         (type *) ((char *) __mptr - offsetof(type, member));})
49 #define sizeof_field(type, field) sizeof(((type *)0)->field)
61         -offsetof(type, field)]; \
64 #define typeof_field(type, field) typeof(((type *)0)->field)
65 #define type_check(t1,t2) ((t1*)0 - (t2*)0)
69         int:(x) ? -1 : 1; \
76 #define QEMU_BUILD_BUG_ON_ZERO(x) (sizeof(QEMU_BUILD_BUG_ON_STRUCT(x)) - \
88 #define __has_warning(x) 0 /* compatibility with non-clang compilers */
92 #define __has_feature(x) 0 /* compatibility with non-clang compilers */
96 #define __has_builtin(x) 0 /* compatibility with non-clang compilers */
142  * with functions that expect NUL-terminated strings, and to avoid warnings
155  * so disable it for a non-optimizing build.
165  * switch-case statements, but sometimes the compiler has problems
176  * If CFI is enabled, use an attribute to disable cfi-icall on the following
179 #define QEMU_DISABLE_CFI __attribute__((no_sanitize("cfi-icall")))
198  * Disable -ftrivial-auto-var-init on a local variable.
204  * attribute, to pre-emptively eliminate any potential overhead from the
208  * to flag variables, it is important that the code is double-checked to
220  * TSA is available since clang 3.6-ish.
225 #  define TSA(x)   /* No TSA, make TSA attributes no-ops. */
255  * More than one mutex may be specified, comma-separated.
267  * More than one mutex may be specified, comma-separated.
278  * More than one mutex may be specified, comma-separated.
289  * More than one mutex may be specified, comma-separated.
308  * More than one mutex may be specified, comma-separated.
331  * the variable that receives the old value of an atomically-accessed
332  * variable must be non-qualified, because atomic builtins return values
333  * through a pointer-type argument as in __atomic_load(&var, &old, MODEL).
337  * converted to a non-qualified type just by applying a binary operator.
344         __builtin_types_compatible_p(typeof(expr), volatile bool) ||               \
345         __builtin_types_compatible_p(typeof(expr), const volatile bool),           \
350         __builtin_types_compatible_p(typeof(expr), volatile signed char) ||        \
351         __builtin_types_compatible_p(typeof(expr), const volatile signed char),    \
356         __builtin_types_compatible_p(typeof(expr), volatile unsigned char) ||      \
357         __builtin_types_compatible_p(typeof(expr), const volatile unsigned char),  \
362         __builtin_types_compatible_p(typeof(expr), volatile signed short) ||       \
363         __builtin_types_compatible_p(typeof(expr), const volatile signed short),   \
368         __builtin_types_compatible_p(typeof(expr), volatile unsigned short) ||     \
369         __builtin_types_compatible_p(typeof(expr), const volatile unsigned short), \